Tave adolphe canet



(No Model.) 2 Shets-Sheet 1.

' J B. G. A. (JANET.

GUN CARRIAGE 0R MOUNTING.

No. 467,855. Patented Jan. 26, 1892.

m: nomus PiTERS aim, PND'IO-LITHCL, wAsnm'z'ruu, o. c.

(No Model.) 2 Sheets'--Sheet 2.

J.B.G.A,.OANET. GUN GARRIAGE 0R MOUNTING.

No. 467,855. Patented'Jam-Z6, 1892.

F E 6 i A UNITED STATES PATENT OFFICE.

JEAN BAPTISTE GUSTAVE ADOLPHE CANET, OF PARIS, FRANCE, ASSIGN OR OF ONE-HALF TO THE SIR JOSEPH \VHITVORTH do COMPANY, LIMITED, OF MANCHESTER, ENGLAND.

GUN CARRIAGE OR MOUNTING.

SPECIFICATION forming part of Letters Patent No. 467,855, dated January 26, 1892.

Application filed April 15, 1891. fierial No. 389,046. (No model.) Patented in France March 16, 1886, No. 174,807, and in England July 9, 1887, No 9,687.

To all whom it may concern: any part of the deck or other platform, and 50 Be it known that I, JEAN BAPTISTE GUS- to further provide for the distribution of the 1 TAVE ADOLPHE (JANET, engineer, a citizen of stresses due to the firing and recoil f the gun, .the Republic of France, and a resident of I make the base-plate or foundation-plate of 5 Paris, France, have invented certain new and a single casting, formed with the ways, tracks,

useful Improvements in and Relating to Gun or roller-paths and with the aforesaid circular 55 .Oarriages or Mountings, (for which I have or segmental ribs or projections or grooves.

obtained patents in the following countries, In the accompanying drawings I have viz: in Great Britain, No. 9,687, dated July 9, shown how my said invention may be con- 1887, and in France, No. 174,807, dated March veniently and advantageously carried into 16, 18 86, which invention was formerly inpractice. 6 cluded in my application for Letters Patent Figure 1 is a plan, partly in horizontal secof the United States, Serial No. 27 9,693, filed tion, of one form of my improved gun caron July 11, 1888,) of which invention the folriage or mounting, some of the parts being lowing is a specification, reference being had removed, and Fig. 2 is a vertical section on to the accompanying drawings. the line w m, Fig. 1. Figs. 3 and 4 are vertical My invention relates to gunmountings central sections illustrating modifications of chiefly designed for use on ships decks or on my said invention. similar platforms. Like letters indicate corresponding parts in 20 The main object of my said invention is to all the figures.

provide for the training or traversing of the A is astrong base-plate or foundation-plate, 7c gun with the chassis, frame, or under-carwhich has formed in one therewith the couriage about an imaginary or virtual pivot or centric roller-paths A A axis, and thus obviate the necessity for the B is the chassis, frame, or under-carriage,

2 5 usual pivot pin or pintle. For this purpose which is supported, through the medium-of I provide the base-plate or foundation-plate suitable rollers or trucks 0 D upon the said of the mounting with one or more circular or roller-paths A A segmental ribs or projections, the center of E is a segmental rib or projection formed which is in the said imaginary or virtual pivot on the base-plate A and concentric with the 0 or axis and which fit into corresponding roller-paths A A The chassis or under-cargrooves in the chassis, frame, or under-carriage B is provided with a segmental groove riage, or I form the said ribs on the chassis, B, so'that it will engage with the said rib or frame, or under-carriage and the correspondprojection E. The said chassis or under-caring grooves in the base-plate, and I support riage can, therefore, be moved upon the base- 3 5 the said chassis, frame, or under-carriage on plate A in one or the other direction aboutan rails or roller-paths concentric with the said imaginary or virtual pivot or axis at of, Fig. circular or segmentalribs and grooves. Iprol, for the purpose of training or traversing vide, moreover, a solid or strong hook, clip, or the gun. I gripping device in front of the chassis, frame, A strong clip F is firmly attached to the- 0 or under-carriage to prevent tilting of the chassis or under-carriageB and engages with.

same relatively to the base-plate. By the cona rib or projection E on the base-plate A, so struction of the gun-mounting in this manner as to hold down the chassis or under-carriage I provide for distributing the stresses due to and thus prevent tilting of the gun-carriage. the firing of the gun over a much larger area The said clip F may extend throughout the 45 of the said deck or platform than is practicawidth of the frontpart of the under-carriage,

ble when an ordinary pivot pin or pintle is as shown, or it may be of any other desired 5 employed. To obviate any liability to diswidth. I placement of the said roller-paths relatively A segmetal rack G, concentric with the rollto each other in the event of the yielding of er-paths A A? and with the segmental rib E,

is formed on or firmly secured to the baseplate A. With this rack is geared a pinion H, fixed upon a vertical spindle or shaft I, which is supported in a suitable bearing in the under-carriage B, and on which is also fixed a worm-wheel J. This worm-wheel is gearedwith .a worm K, fixed upon a horizontal shaft L, which is provided with a crankhandle or other suitable means for rotating it by manual or other power. The training of the gun is effected by rotating the shaft L, and thus causing the pinion H to rotate about its axis and travel along the rack G, thereby turning the chassis or under-carriage about the imaginary or virtual pivot or axis a the rib E guiding the said chassis or under-carriage during such movement thereof. The gun can thus betrained or traversed, as required, notwithstanding any inclination of the deck or other platform on which the mounting is supported, without the necessity for the usual pivot pin or pintle secured to the deck or side of the ship. It will be seen that the stresses due to the firing and recoil of the gun will be transmitted through the under-carriage B to the segmental rib or projection E and will be distributed over substantially the entire area of that portion of the deck which is covered by the said baseplate. This form of base-plate is therefore very advantageous, more especially in guninountings for use on board ships with lightly-constructed decks.

It is obvious that, if desired, two or more segmental ribs may be provided upon the base plate and fitted into corresponding grooves in the chassis or under-carriage for the purpose before specified.

In the modification of my invention shown in Fig. 3 the base-plate A is provided with two segmental ribs E fitting into corresponding grooves B in the chassis or under-earriage B. It is, moreover, evident that segmental grooves or recesses may, if desired, be formed in the foundation or base plate to engage with corresponding projections or ribs on the chassis or under-carriage for the purpose above specified.

In the modification of my invention shown in Fig. 4 a segmental rib E is formed on the chassis or under-carriage B and works in a corresponding groove B in the base-plate A.

What I claim is- 1. A forward-pivot gun-mounting constructed without the usual pivot pin or pintle and provided with a device whereby the chassis or under-carriage is guided in the training or traversing of the same upon the base-plate and is supported against the force of the recoil, which device comprises a vertical circu lar rib on one of these parts fitting into a corresponding groove in the other part, substantially as hereinbefore described.

2. A forward-pivot gun-mouu ting constructed without the usual pivot pin or pintle and provided, in addition to the ordinary rollers and racers or roller paths, with a device whereby the chassis or under carriage is guided in the training or traversing of the same upon the base-plate and is supported against the force of the recoil, which device comprises a circular rib on one of theseparts fitting into a corresponding groove in the other part, substantially as hereinbefore described.

3. In a forward-pivot gun-mounting constructed without the usual pivot pin or pintle, the combination of a base-plate having a circular rib or projection E, a chassis or under-carriage provided at its forward end with a hook or clip E, which extends downward therefrom in front of the said rib or projection and engages with the latter, and a device whereby thesaid chassis or under-carriage is guided in the training or traversing of the same upon the base-plate and is supported against the force of the recoil, which device comprises a circular rib or projection E on one of these parts fitting into a corresponding groove B in the other part, substantially as and for the purposes set forth.

4. In a forward-pivot gun-mounting constructed without the usual pivot pin or pintle, a base-plate having cast integrally therewith both the front and rearsegmental ways or roller-paths, and a segmental guide whereby the chassis or undercarriage is caused to move about an imaginary or virtual pivot or axis when turned to train or traverse the gun and is supported against the force of the recoil, and a segmental projection or flange for engaging with a hook-clip or gripping device on the said chassis or under-carriage, substantially as and for the purposes set forth;

5. In a forward-pivot gun-mounting, the combination of the base plate A, having formed integrally therewith the segmental roller-paths A A and the segmental projections, ribs, or flanges E E, the segmental rack G, formed on or secured to the said base-plate, and the chassis or under-carriage B, provided with the rollers or trucks 0 D, whereby it is supported on the said rollerpaths, and with the groove B, engaging with the rib E, the pinion H, carried by the said chassis and geared with the said rack, and the clip F, secured to the said chassis and engaging with the rib or flange E, substantially as and for the purposes set forth.

In testimonywhereof I have hereunto signed my name in the presence of two subscribing witnesses.

JEAN BAPTISTE GUSTAVE ADOLPIIE (JANET.

Witnesses:

ROBT. M. HOOPER, Dams P. KEOGH. 

